无抖振离散准滑模控制  

Chattering-free Discrete Quasi-sliding Mode Controller

作　　者：于双和[1] 强文义[1] 傅佩琛[1] 

机构地区：[1]哈尔滨工业大学控制工程系,黑龙江哈尔滨150001

出　　处：《控制与决策》2001年第3期380-382,共3页Control and Decision

摘　　要：基于对常规离散准滑动模态及其抖振的分析 ,提出将离散趋近律与等效控制相结合的控制策略 ,既保证了趋近模态具有良好品质 ,又降低了准滑动模态带。该控制策略可避免系统状态步步反向穿越滑动面的抖振运动 ,从而消除了控制的抖振 ,并以较少的控制能量获得较好的系统性能。Based on the analysis of the conventional discrete quasi sliding mode and its chattering, the control strategy combining discrete quasi sliding mode control with discrete equivalent control is presented. Not only the good qualities of the reaching mode preserved are ensured, but also the undesired chattering of the system states and the control signal with crossing the surface again in every successive sampling period are avoided. A good performance of the system is achieved using reduced control effort.

关 键 词：离散趋近律 准滑动模态 等效控制 抖振消除 计算机控制系统 

分 类 号：TP273.5[自动化与计算机技术—检测技术与自动化装置]